---
product_id: 179946739
title: "Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module"
brand: "comimark"
price: "฿966"
currency: THB
in_stock: true
reviews_count: 3
url: https://www.desertcart.co.th/products/179946739-comimark-1pcs-mcp73871-usb-dc-solar-lipoly-lithium-lon-polymer
store_origin: TH
region: Thailand
---

# Integrated system load sharing USB & solar/DC power compatible 1.8A max input current Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module

**Brand:** comimark
**Price:** ฿966
**Availability:** ✅ In Stock

## Summary

> 🔌 Charge smarter, power longer — the future of battery management is here!

## Quick Answers

- **What is this?** Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module by comimark
- **How much does it cost?** ฿966 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/179946739-comimark-1pcs-mcp73871-usb-dc-solar-lipoly-lithium-lon-polymer)

## Best For

- comimark enthusiasts

## Why This Product

- Trusted comimark brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Power Inputs:** Seamlessly switch between USB port, AC-DC adapter, or solar/DC sources for ultimate versatility.
- • **Smart Current Control:** Voltage Proportional Current Control prioritizes system load over battery charging for optimal efficiency.
- • **Precision Charging Options:** Preset high-accuracy charge voltages with programmable fast charge current from 50mA to 1A.
- • **Built-in Safety & Protection:** Includes reverse discharge protection, thermal regulation, and undervoltage lockout to keep your battery safe.
- • **Power & Charge in Perfect Harmony:** Simultaneously powers your device while charging the battery, so you never miss a beat.

## Overview

The Comimark MCP73871 is a compact, integrated Li-Ion/Li-Polymer battery charge management module designed for professional-grade power solutions. Supporting up to 1.8A input current, it intelligently balances system load and battery charging with advanced safety features and multiple power source compatibility, including USB, AC-DC adapters, and solar inputs. Ideal for GPS, smartphones, and portable electronics, it ensures efficient, reliable, and precise charging in a sleek 4x4mm QFN package.

## Description

Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module

## Features

- Integrated System Load Sharing and Battery
- Integrated System Load Sharing and Battery
- The MCP73871 device is a fully integrated linear solution for system load sharing and Li-Ion / Li-Polymer battery charge management with ac-dc wall adapter and USB port power sources selection
- Package Included: 1 x MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module
- If You Are Not Satisfied with Your Purchase for Any Reason, Please Feel Free To Contact Us at the Buyer Center or Support Email, 24/7 Quick Reply.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Comimark |
| Item model number | LY340 |
| Item Weight | 0.634 ounces |
| Package Dimensions | 4.8 x 3 x 0.3 inches |
| Manufacturer | Comimark |
| ASIN | B07V4PHKNX |
| Date First Available | July 11, 2019 |

## Product Details

- **Brand:** Comimark
- **Item Weight:** 0.02 Kilograms
- **Output Voltage:** 4.2 Volts (DC)
- **Specification Met:** UL, FCC
- **Input Voltage:** 240 Volts

## Images

![Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module - Image 1](https://m.media-amazon.com/images/I/61CJLJHPT6L.jpg)
![Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module - Image 2](https://m.media-amazon.com/images/I/71boWI6cPXL.jpg)
![Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module - Image 3](https://m.media-amazon.com/images/I/61BPqHy1CeL.jpg)
![Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module - Image 4](https://m.media-amazon.com/images/I/61RTDuqDw0L.jpg)
![Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module - Image 5](https://m.media-amazon.com/images/I/71cT3m1+RoL.jpg)

## Questions & Answers

**Q: What is the pinout of the header?**
A: I used the pinout shown on this link:https://www.amazon.com/dp/B07V4PHKNX?ref_=pe_527950_33920250_dpLink

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as expected, quite well.
*by P***I on June 14, 2025*

Does what it was designed for which is why I bought it. I'm just developing my project, but once I've settled on the design, I'll probably remove the status LED and make other minor changes to save energy. I will eventually optimize the design for low energy consumption and improved efficiency.

### ⭐⭐⭐⭐ Fine for the price. Little time with the datasheet available online made it pretty clear to use.
*by F***N on August 18, 2022*

Yeah, some documentation would have been nice but the data sheet is available online for the chip.

### ⭐ Missing documentation
*by T***0 on April 25, 2021*

Package arrived today; no documentation of any sort. No contact information; only two bar codes with no meaningful imformation. Header pins; no way to indentify header pin, connection uses. No imformation about thermistor selection.

## Frequently Bought Together

- Comimark 1Pcs MCP73871 USB DC Solar Lipoly Lithium Lon Polymer Charger 3.7/4.2V Battery Module
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-21*